If a circle has a diameter of two what would the area be

Match each statement with its corresponding value for the system below: y = -2(3)x and y = 9x - 2 1. the number of points of intersection. -2 2. the x-coordinate of the solution. 1 3. the y-coordinate of the solution. 0

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1