The missing coefficient
is option D. 4
How did we get the value?
To find the missing coefficient (a) in the equation
, we can substitute the given point
into the equation and solve for

Replace
with
and
with
:
![\[ a(-4) - 2(-5) = -6 \]](https://img.qammunity.org/2024/formulas/mathematics/college/rfu49l0tc3027a6nbjer2dwy02te7xxqvt.png)
Simplify the expression:
![\[ -4a + 10 = -6 \]](https://img.qammunity.org/2024/formulas/mathematics/college/25pp4uhvbc7tbz4k35ojy50tvvfp934f7h.png)
Subtract 10 from both sides:
![\[ -4a = -16 \]](https://img.qammunity.org/2024/formulas/mathematics/college/661i7z7kztc7wlpbjl8hbkca099gtucvor.png)
Divide by -4 to solve for
:
![\[ a = (-16)/(-4) \\= 4 \]](https://img.qammunity.org/2024/formulas/mathematics/college/rfd38x2xxrabvxmcv8pslvqnq1ntlkrtdt.png)
So, the missing coefficient
is 4. Therefore, the correct answer is (d) 4.
Complete question:
Find the missing coefficient in the equation of the line shown: ax - 2y = -6, given the point (-4, -5).
a) 6
b) -6
c) -4
d) 4