help please !!! I need some to help learn how to solve this problem
What is the x-intercept of the line with the equation?
Slope = 24 2. x-intercept = 48/24 = 2 3. y-intercept = 48/-1 = -48.00000 Rearrange: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation : 8*x-1/3*y-(16)=0 Step by step solution : Step 1 : 1 Simplify — 3
how do i find the answer?
Equation at the end of step 1 : 1 (8x - (— • y)) - 16 = 0 3 Step 2 : Rewriting the whole as an Equivalent Fraction : 2.1 Subtracting a fraction from a whole Rewrite the whole as a fraction using 3 as the denominator : 8x 8x • 3 8x = —— = —————— 1 3 Equivalent fraction : The fraction thus generated looks different but has the same value as the whole Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator
Adding fractions that have a common denominator : 2.2 Adding up the two equivalent fractions Add the two equivalent fractions which now have a common denominator Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible: 8x • 3 - (y) 24x - y ———————————— = ——————— 3 3 Equation at the end of step 2 : (24x - y) ————————— - 16 = 0 3 Step 3 : Rewriting the whole as an Equivalent Fraction : 3.1 Subtracting a whole from a fraction Rewrite the whole as a fraction using 3 as the denominator : 16 16 • 3 16 = —— = —————— 1 3 Adding fractions that have a common denominator : 3.2 Adding up the two equivalent fractions (24x-y) - (16 • 3) 24x - y - 48 —————————————————— = ———————————— 3 3 Equation at the end of step 3 : 24x - y - 48 ———————————— = 0 3 Step 4 : When a fraction equals zero : 4.1 When a fraction equals zero ... Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero. Now,to get rid of the denominator, Tiger multiplys both sides of the equation by the denominator. Here's how: 24x-y-48 ———————— • 3 = 0 • 3 3 Now, on the left hand side, the 3 cancels out the denominator, while, on the right hand side, zero times anything is still zero. The equation now takes the shape : 24x-y-48 = 0 Equation of a Straight Line 4.2 Solve 24x-y-48 = 0 Tiger recognizes that we have here an equation of a straight line. Such an equation is usually written y=mx+b ("y=mx+c" in the UK). "y=mx+b" is the formula of a straight line drawn on Cartesian coordinate system in which "y" is the vertical axis and "x" the horizontal axis. In this formula : y tells us how far up the line goes x tells us how far along m is the Slope or Gradient i.e. how steep the line is b is the Y-intercept i.e. where the line crosses the Y axis The X and Y intercepts and the Slope are called the line properties. We shall now graph the line 24x-y-48 = 0 and calculate its properties Graph of a Straight Line : Calculate the Y-Intercept : Notice that when x = 0 the value of y is 48/-1 so this line "cuts" the y axis at y=-48.00000 y-intercept = 48/-1 = -48.00000 Calculate the X-Intercept : When y = 0 the value of x is 2/1 Our line therefore "cuts" the x axis at x= 2.00000 x-intercept = 48/24 = 2 Calculate the Slope : Slope is defined as the change in y divided by the change in x. We note that for x=0, the value of y is -48.000 and for x=2.000, the value of y is 0.000. So, for a change of 2.000 in x (The change in x is sometimes referred to as "RUN") we get a change of 0.000 - (-48.000) = 48.000 in y. (The change in y is sometimes referred to as "RISE" and the Slope is m = RISE / RUN) Slope = 24 Geometric figure: Straight Line 1. Slope = 24 2. x-intercept = 48/24 = 2 3. y-intercept = 48/-1 = -48.00000 lol there u go....
huh @willowwest17
@Watermelon_Talk I helped you lol
What is the x-intercept of the line with the equation? the x-intercept means where does the line "intercept" or cross the x-axis that happens when y is 0 so you should replace y with 0 in your equation 8x - y/3 = 16 what new equation do you get when you replace y with 0?
in other words, "erase the y" and write in 0 in stead what do you get ?
@phi i got 8x-1/3=16
you should get 8x -1/3*0 = 16 you put in 0 instead of y now multiply 0 times 1/3
you start with \[ 8 x -\frac{1}{3}y=16\] then erase the y and put in 0 \[ 8 x -\frac{1}{3}\cancel{y}\cdot 0=16\]
oh okay
what is 1/3 * 0 ?
0
@phi isnt anything times 0 is zero right
yes, that means 8x -0 =16 when you "take away 0" you don't do anything in other words 8x-0 simplifies to 8x so you have 8x= 16 to "solve for x" divide both sides by 8
does that not aplly with graphing
oh okay
8x= 16 8x/8 = 16/8 on the left side, 8x/8 is 1x or just x what do you get for the right side: 16/8
so the answer is 2
yes x=2 that is the x-intercept for this line
X=2
thnx so much ithnk i can solve it know
without any trouble
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