Question

Which of the graphs below represents the equation 8x - y = -4?

Answer 1

First you have to put the equation into y=mx +b form

8x - y = -4

-y = -8x - 4
y= 8x + 4

Are you with me so far?

Answer 2

Because the slope is positive, you can automatically cross out A and C because they have negative slopes.

Answer 3

Both have the y intercept at 4, so you just need to look at which one has the slope of 8/1

Answer 4

graph B?

Answer 5

yes

Answer 6

the way to find the x and y intercepts.....we already found the y intercept by putting the equation in y = mx = b form, where b was the y intercept. To find the x intercept, sub in 0 for y.
8x - y = -4
8x - 0 = -4
8x = -4
x = -4/8 or -1/2
so the x intercept is -1/2.
Looking at graph B, it shows y intercept at 4 and x intercept at -1/2. So, yes, it is graph B

Answer 7

Correct :)