Please help: 3x + 4x - 3 = 81 solve for x
2 answers:
3x + 4x - 3 = 81
Combine like terms on the left side of the equation. The like terms are 3x and 4x because they contain the same variable x. Add them together then rewrite the equation.
7x - 3 = 81
Add 3 to both sides of the equation to isolate the variable x on one side of the equation.
7x = 84
Divide both sides of the equation by 7 to solve for x.
is your answer.
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ANSWER
See explanation
EXPLANATION
The table contains these two points (-4,-3) and (2,-4.5)
The slope of this line is given by;
The y-intercept can be obtained by finding the equation of the line in the form:
We plug in the slope and the point (-4,-3) to find c.
This implies that,
Hence the y-intercept is -4.
The given line is
This is already in the slope intercept form:
The slope is
The y-intercept is c=1