Question

Using complete sentences, explain how you would graph the equation y + 4x = 8 (3 pts.). Explain how you would make a table of values. List the values you would use to graph the equation

Answer 1

y + 4x = 8

to find the x intercept, sub in 0 for y.
0 + 4x = 8
4x = 8
x = 2 ......the x intercept is (2,0)

to find the y intercept, sub in 0 for x
y + 4(0) = 8
y = 8 ..... the y intercept is (0,8)

plot your intercepts (2,0) and (0,8)

you can then draw a line connecting your intercepts.

But if you need to use the slope, put your equation in y = mx + b form
y + 4x = 8
y = -4x + 8
slope is -4.
start at (0,8) and go down 4 spaces, and to the right 1 space, then down 4, then to the right 1, and you should cross the x axis at (2,0)
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as far as making a table...
y + 4x = 8

when x = 1
y + 4(1) = 1
y + 4 = 1
y = -4 + 1
y = -3

when x = 2
y + 4(2) = 1
y + 8 = 1
y = -8 + 1
y = -7

when x = 3
y + 4(3) = 1
y + 12 = 1
y = -12 + 1
y = -11

and so on....depending on how many values you want in your table.