Find the value of y when x equals 4, -3x+9y=-57
2 answers:
-12 + 9y = -57
add 12 to both sides, 9y = -45
divide 9 from both sides to isolate the y
y = -5
-3(4)+9y=-57
-12+9y=-57
9y=-45
y=-5
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Answer:
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Step-by-step explanation:
1,35 3,57
slope = (57 - 35)/(3 - 1) = 11
y = 11 x + b
35 = 11 (1) + b
b= 24
y = 11x + 24
y = 11(5) + 24 = 79
