Easy grade 10 question quadratics equation?

Author Question: Easy grade 10 question quadratics equation? (Read 1645 times)

Jones

Full Member
Posts: 145

on: Jun 18, 2013

A parabola with the vertex of (0,0) that passes through the point, (-1, -3). Write the equation in vertex form.

10 points?

j_sun

Sr. Member
Posts: 384

Reply #1 on: Jun 18, 2013

A parabola with a vertex at (h,k) can be written in this form:
y-k = a(x-h)^2

So all we have to do now is found out the values of a, h, and k.

You're given the vertex point as (0,0), so both h and k are zero. To find the value of 'a', plug in the other given point and solve for 'a'.

Need homework help now?

Ask unlimited questions for free

Ask a Question

« previous next »

Did you know?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

Did you know?

The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Did you know?

The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

Did you know?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.