The general point-slope equation for a str. line is y-k = m(x-h),
where m is the slope and (h,k) is a point on the line.
Given that the line passes thru (-4,6) and (1,2), we find the slope as follows:
6-2
m = ----------- = -4/5
-4-1
Subst. -4/5 for m, 6 for k and -4 for h in y-k = m(x-h):
y-6 = (-4/5)(x+4)
Compare this result to the equations given.
Option A: -24 is the coefficient of i
Explanation:
The expression is
To determine the coefficient of i, first we shall find the square of the binomial for the expression
The formula to find the square of the binomial for this expression is given by
where and
Substituting this value and expanding, we get,
Simplifying the terms, we have,
Thus, from the above expression the coefficient of i is determined as -24.
Hence, Option A is the correct answer.
(88 + 92 + 96 + x) / 4 = 90
(276 + x) / 4 = 90
276 + x = 90 * 4
276 + x = 360
x = 360 - 276
x = 84 <=== he would need an 84
I believe it is:
(−16/9, 1/9)
Solve for the first variable in one of the equations, then substitute the result into the other equation.