It’s worth 10 points i’m not very good at math

Which values for a and b will create infinitely many solutions for this system of equations? ax-y=8 2x+y=b

The radius of the circle is 4 cm and the measure of the central angle is 90° the area of the sector with a central angle measuring 90° and radius of length 4 cm is vt cm the triangle in the sector is 4 cm the area of the triangle is v/cm² the area of the segment of the circle is (471 - ) cm?

Which linear function represents the line given by the point-slope equation y + 1 = –3(x – 5)?