Question

Given the linear equation y = -4x – 2, find the y-coordinates of the points (1, ), (-1, ), and (-3, ). Please show all of your work. Plot these points and graph the linear equation

Answer 1

Just plug in those numbers for x. FOr example, I'll do the first one.
y = -4x - 2
y = -4(1) - 2
y = -4 - 2
y = -6
(1, -6)
See? Do the same for the others.

Answer 2

So the next one would be
y=-4(-1)-2
y=4-2
y=2
(1, 2)

Answer 3

Yes, except that the final answer for that would be (-1, 2) since the x-value changed.

Answer 4

Okay

Answer 5

And the last one I ended up with (10, -3)

Answer 6

Close. It would be (-3, 10). You got the values mixed up. I assume you know how to plot these and just draw a line through them?

Answer 7

Yes thank you

Answer 8

No Problem :)

Answer 9

Can you help me with this one?

Find the x- and y-intercepts for the equation -x + 2y = 4

Answer 10

Set x = 0 to get the y-intercept and set y = 0 to get the x-intercept.

Answer 11

So -0 + 2(0)=4?

Answer 12

Set them equal to zero separately.

Answer 13

-(0) + 2y = 4
-x + 2(0) = 4
Just solve for the x and y in each of those.
Y-Intercept: (0, ?)
X-intercept: (?, 0)

Answer 14

So y =2?

Answer 15

Yup. y-intercept: (0, 2)

Answer 16

So x intercept would be (2, 0) ?

Answer 17

No solve: -x + 2(0) = 4
Then put the answer where the question mark is: (?, 0)

Answer 18

Hmmm

Answer 19

I don't know

Answer 20

Simplifying it further:
-x + 2(0) = 4
-x + 0 = 4
-x = 4
x = -4

Answer 21

Ohh okay thank you

Answer 22

No Problem :)