Question

which ordered pair is a solution of the equation y=3x

(-2,-9)
(-8,-18)
(-8,-3)
(-10,-30)

which ordered pair is a solution of the equation y=-9x + 4

(10,-86)
(-4, -58)
(6,-41)
(-6, 57)

please help explain these to me

Answer 1

(-10,-30)

(10,-86)

Answer 2

Substitute the values into the equations.

Let's check @surdawi answers:
1)
y=3x
(-10, -30)
-30 = 3(-10)
-30 = -30 *CORRECT*

2)
y=-9x + 4
(10,-86)
-86 = -9(10) + 4
-86 = -90 + 4
- 86 = -86 *CORRECT*