Question

Can I get these solved so I will have the points to mark them on a graph?

Y = -2X + 2

X + 3Y = -4

Answer 1

• points on the first line: (0, 2), (1, 0)
• points on the second line: (-4, 0), (-7, 1)

Explanation:

For equations like these, where the coefficient of one of the variables is 1, it is convenient to choose values for the other variable. Values of 0 and 1 are usually easy to work with.

In the first equation, ...

for x=0, y = 2 . . . . . . . . . point (0, 2)

for x=1, y = -2+2 = 0 . . . point (1, 0)

In the second equation, ...

for y=0, x = -4 . . . . . . . . . point (-4, 0)

for y=1, x +3 = -4, so x = -7 . . . . point (-7, 1)