Answer:
3. (d) y = 2x + 2
4. (c) 10
5. See attachment.
Step-by-step explanation:
Slope formula
[tex]\boxed{\textsf{slope}\:(m)=\dfrac{y_2-y_1}{x_2-x_1}}[/tex]
where (x₁, y₁) and (x₂, y₂) are points on the line.
Slope-intercept form of a linear equation
[tex]\boxed{y=mx+b}[/tex]
where m is the slope and b is the y-intercept.
Question 3
Given points on the line:
- (x₁, y₁) = (1, 4)
- (x₂, y₂) = (-2, -2)
Substitute the given points into the slope formula to find the slope, m:
[tex]\implies \textsf{slope}\:(m)=\dfrac{-2-4}{-2-1}=\dfrac{-6}{-3}=2[/tex]
Substitute the found slope and one of the points into the slope-intercept equation and solve for b:
[tex]\implies 4=2(1)+b[/tex]
[tex]\implies b=2[/tex]
Therefore, the equation of the line is:
[tex]\boxed{y=2x+2}[/tex]
Question 4
Given equation:
[tex]y=10x-6[/tex]
Upon comparing the given equation with the slope-intercept formula, the slope of the given line is: [tex]\boxed{10}[/tex]
Question 5
The equation y = 2 means that y is 2 for all values of x.
Therefore, to graph y = 2, draw a straight, horizontal line at y = 2.
(See attached graph).
