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SAT Math Practice Question #40347 - SATify | SATify

#40347

linear

easy

20 sec

Line $A$ has a slope of $m_{A}$ . Line $B$ has a slope of $m_{B}$ . Line $C$ has a slope of $m_{C}$ . If Line $A$ and Line $B$ are parallel, and Line $A$ and Line $C$ are perpendicular, which of the following statements must be true?

A.

$m_{A} = m_{B}$ and $m_{A} = m_{C}$

B.

$m_{A} = m_{B}$ and $m_{A} \cdot m_{C} = - 1$

C.

$m_{A} \cdot m_{B} = - 1$ and $m_{A} = m_{C}$

D.

$m_{A} = m_{B}$ and $m_{A} + m_{C} = 0$