Please help this is easy I promise
2 answers:
Answer:
y=-1/12x+11/3
Step-by-step explanation:
When a line is perpendicular, the slope is going to be the negative reciprocal
negative reciprocal ex: 3----> -1/3
since the slope of line you are given is 12, the slope of the perpendicular line is -1/12
so you now know your equation so far is y= -1/12x+b
to find b, replace x and y with the coordinates.
4= -1/12(-4)+b
4=1/3+b
11/3=b
the equation is y=-1/12x+11/3
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Answer:
(b)
Step-by-step explanation:
A suitable calculator or spreadsheet can find the matrix product for you. Here, the answer choices differ in their upper left term, so we can determine the correct choice by finding the value of that term. It is the dot product of the first row of B and the first column of A.
(5)(3) +(7)(3) +(3)(2) = 15 +21 +6 = 42
This matches choice B.
