Question

i really need help pleas
Which of the following statements best describes the graph of -5x + 2y = 1?

It is a curve joining the points (-5, 2), (2, 3), and (4, 1).
It is a curve joining the points (-1, -3), (-1, -3), and (1, 5).
It is a straight line joining the points (1, 3), (3, 8), and (-3, -7).
It is a straight line joining the points (4, -3), (-1, 2), and (-4, 5).

Answer 1

You can convert this equation to the slope intercept form. The original equation is in the standard form of Ax + Bx = C

Answer 2

im sorry that makes no since to me

Answer 3

slope intercept form is y = mx + b; m is the slope, b is the y-intercept

Answer 4

-5x + 2y = 1; do you know how to solve for y?

Answer 5

i dont understand slopes
no

Answer 6

\[-5x + 2y = 1\]
\[2y = 5x + 1 \]

Answer 7

\[y = \frac{ 5 }{ 2 }x + \frac{ 1 }{ 2 }\]

Answer 8

You can rule out the first two options because any equation in the slope intercept form is a linear equation, meaning that there is a straight line connecting the coordinates

Answer 9

oki

Answer 10

then

Answer 11

To find out the points, just plug them into the equation and see if they match

Answer 12

how do i do that exactly

Answer 13

Okay let's start with the third option. The coordinates are (1, 3), (3, 8), and (-3, -7)
Our equation is \[y = \frac{ 5 }{ 2 }x + \frac{ 1 }{ 2 }\]

Answer 14

ok wat do we do

Answer 15

Let's start out with the first coordinates (1, 3). Here 1 is the x-value and 3 is the y-value.
Plug them into or equation. Is \[\frac{ 5 }{ 2 }(1) + \frac{ 1 }{ 2 } \]
equal to our corresponding y-value, 3?

Answer 16

5/2 means 2.5 right? When you multiply 1 by 2.5, you get 2.5. Add 1/2 which is 0.5, and you get 3. SO far the first coordinates match. Let's get to the other two coordinates of the third option.

Answer 17

(3, 8); x = 3, y = 8
Is 2.5(3) + 0.5 equal to 8. Yes they do.
\[8 = \frac{ 5 }{ 2 }(3) + \frac{ 1 }{ 2 }\]

Answer 18

(-3, -7); x = -3, y = -7
Is 2.5(-3) + 0.5 equal to -7. Yes they do.
\[-7 = \frac{ 5 }{ 2 }(-3)+ \frac{ 1 }{ 2 }\]

Answer 19

SO BECAUSE THE VALUES ALL MATCH WITH EACH OTHER IN OUR EQUATION, THE ANSWER IS THE THIRD OPTION

Answer 20

oh thx

Answer 21

np