Easy grade 10 question quadratics equation?

Author Question: Easy grade 10 question quadratics equation? (Read 1660 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?

A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Did you know?

Women are 50% to 75% more likely than men to experience an adverse drug reaction.