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Can someone please help me?

Can someone please help me?-example-1
User Mihkorz
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1 Answer

10 votes

A slope of a line.

We have the equation of a line:


y=-(5)/(4)x-1

The formula of a slope of a line passes through points A, B:


A(x_A,\ y_A),\ B(x_B,\ y_B)\\\\m=(y_B-y_A)/(x_B-x_A)

Complete the table:

Put the values of x to the equation of a line and calculate the value of y:


x=0\\\\y=-(5)/(4)\cdot0-1\\\\y=-1\\\\\\x=4\\\\y=-(5)/(4)\cdot4-1\\\\y=-6

Substitute to the formula of a slope:


m=(-6-(-1))/(4-0)\\\\m=(-6+1)/(4)\\\\\huge\boxed{m=-(5)/(4)}

Can someone please help me?-example-1
User Sergey Nikitin
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6.6k points