Line t has a slope of 3 and a y-intercept at (0, -1). Which line has the same y-intercept as line t, but has a slope of -3?

4. a spring scale is constructed so that each 0.10-n increment is separated by 0.50 cm. what spring constant is necessary for the scale to be accurate? -1.0n/cm -0.10n/cm -9.8 n/cm -0.20n/cm

Need on this one asap im almost done with this subject

Bring the fraction a/a-4 to a denominator of 16-a^2