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The graph shows a line which has an equation in the form y=mx+b
Which of the following statements is true?
m is positive
b is negative
The value of T varies directly with the square of R. If T = 20 when R = 10. What is the value of T when R = 40 ?
T=k×R^2
20=k×10^2
k=20/100
k=1/5
T=1/5×40^2
T=320
Which of the following correctly expresses P as the subject if E = IR + P/C
E-IR=P/C
P=C(E-IR)
P=CE-CIR
Which of the following equations is not an example of a linear function?
y=2/x hyperbola
If graphed, at what value does the linear equation C = 2n – 6, cross the vertical axis?
C=2n-6
y- intercept : -6