# Find the value of x or y so that the line passing through the given points has the given slope. (9, 3), (-6, 7y), m = 3

Find the value of x or y so that the line passing through the given points has the given slope. (9, 3), (-6, 7y), $m=3$
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irwchh
Formula for the slope of a line, given two points on that line slope = $m=\frac{\left(y2-y1\right)}{\left(x2-x1\right)}$
Substituting the known values for this problem and simplifying $3=\frac{\left(7y-3\right)}{\left(-6-9\right)}$
$3=\frac{\left(7y-3\right)}{-15}$
Cross-multiplying and solving
$-45=7y-3$
$-42=7y$
$y=-6$