Solve by factoring: $$9 y ^ { 2 } + 7 y = 0$$
A) $\frac { 7 } { 9 }$ , 0
B) 1, 0
C) $- \frac { 7 } { 9 }$ , 0
D) 0, 1
E) $- \frac { 9 } { 7 }$ , 0

Name: Solve by factoring: \[9 y ^ { 2 } + 7 y = 0\] A) $\frac { 7 } { 9 }$ , 0 B) 1, 0 C) $- \frac { 7 } { 9 }$ , 0 D) 0, 1 E) $- \frac { 9 } { 7 }$ , 0
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Question

Quizplus · Accepted Answer

Factor out y:

$$
y(9y+7)=0
$$

This gives two solutions: $y=0$ and $9y+7=0 \Rightarrow y=-\frac{7}{9}$. Thus, the answer is choice C.

Solve by Factoring 9y2+7y=09 y ^ { 2 } + 7 y = 09y2+7y=0

Solve by Factoring $9 y ^ { 2 } + 7 y = 0$