Answer:
x-intercept = (4,0)
Step-by-step explanation:
Slope = 1/2
y-intercept = -2
x-intercept =?
Step 1 ; Use the given information to derive the equation of the line.
Substitute values into ; y=mx+b
Where m = slope
b = y-intercept
Equation = 
Step 2 ; Calculate the x-intercept
Arrange the equation in standard form ; Ax +By = C

Let y = 0

Cross Multiply

So ; (4,-2)
Answer:
use math- way for those and your other homework i promise it'll work!
Step-by-step explanation:
Nothing, no numbers will add to 18 and multiply to -8
Answer:
Identifying at least one confounding variable that undermines the conclusion drawn in the fictional study is:
All students took the same comprehensive test.
Step-by-step explanation:
In a study, an independent variable causes an effect on the dependent variable. But a confounding variable is the variable that influences the independent variable as well as the dependent variable. If this third variable is not controlled, it might lead the researcher to make a wrong estimate of the relationship that exists between the independent variable and the dependent variable.