How do we find the x-intercept of 3x + 2y = 6? Set y = 0 and solve the resulting equation for x:
3x + 0 = 6, or x = 2. The x-intercept is then (0, 2).
y-intercept? Do the same thing, except set x = 0 and solve for y:
3(0) + 2y = 6, or y = 3. The y-int is then (0,3).
You will see problems of this type over and over in algebra, so it'd be best that you learn how to do them now.
Answer:
62.8
Step-by-step explanation:
4. The equation is an exponential function where all y coordinates are above 4 (range is y>4), so for y=4 (answer D) there are no solutions. y=4 is the asymptote.
5. In a formula ax^2 + bx + c the discriminant is b^2-4ac. In this example the discriminant is 9-4*3*6 = -63. The fact that this value is negative reveals that this equation has no (real) solutions, only imaginary.
6. y=2x^2-x-5. Trial and error.
Answer:
2,4
Step-by-step explanation:
They are the only two prime numbers
" or option B.