Given linear equation y = 3+4x a. find the y-intercept and slope. b. determine whether the line slopes upward, slopes downward, or is horizontal, without graphing the equation. c. use two points to graph the equation.

Tazmin Horton

Tazmin Horton

Answered question

2020-11-02

Given linear equation y = 3+4x 
1. calculate the slope and y-intercept.
2. determine whether the line slopes upward, slopes downward, or is horizontal, without graphing the equation. 
3. use two points to graph the equation.

Answer & Explanation

dessinemoie

dessinemoie

Skilled2020-11-03Added 90 answers

y = 3 + 4x is the given linear equation.  The general form of the linear equation is y=b0+b1x. 
(1). Upon comparing the given linear equation with the equation's general form, the y-intercept, b0 is 3 and the slope, b0 is 4. 
(2). The slope of the line is +4, so the gradient is +4. The slopes upward as the line moves from left to right. 
(3) Considering the provided equation, the values for x=0 and y=0 is obtained as: 

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