Question 267334
The equation to use is:
{{{(y - y[1])/(x - x[1]) = m}}}
where {{{m}}} = slope
{{{y[1] = 7}}}
{{{x[1] = -2}}}
Plugging in numbers:
{{{(y - 7)/(x - (-2)) = 4}}}
{{{(y - 7)/(x + 2) = 4}}}
Multiply both sides by {{{x + 2}}}
{{{y - 7 = 4*(x + 2)}}}
{{{y - 7 = 4x + 8}}}
{{{y = 4x + 15}}}
check answer:
does it pass through (-2,7)?
{{{7 = 4*(-2) + 15}}}
{{{7 = -8 + 15}}}
{{{7 = 7}}}
OK